Musannaf Ibn Abi Shayba 16:359

Abu Bakr narrated to us, he said: Waki’ narrated to us, from Fitr, from Mundhir al-Thawri, Abu Ya’la, who said: Ibn al-Hanafiyyah was asked about the eel, the spleen, and things that are disliked, so he recited this verse: "Say, 'I do not find within that which was revealed to me [anything] forbidden...'" until the end of the verse.